View & Edit PDF Info

Change the title, author, subject, and keywords of your PDF.

or drag & drop file here

Supports single PDF • Local Process

How to Edit PDF Metadata

Update your document properties in three simple steps. It is free, secure, and requires no software installation.

1

Select Your PDF (Zero-Knowledge)

Click the Select PDF File button or drag and drop your document. In an era where cloud AI models scrape data, your file stays entirely within your browser's local memory—nothing is uploaded to our servers.

2

View and Edit Properties

Once loaded, you'll see the document's hidden properties, including creator, creation date, page sizes, and security permissions. You can modify the Title, Author, Subject, and Keywords fields.

3

Apply and Download (No Cloud)

Click Apply changes and output new PDF. A new PDF file with your updated metadata will be generated instantly in your browser. No watermarks, no sign-up, and absolutely no data uploaded to any cloud server.

Why Choose CedarPDF

We built CedarPDF to solve the frustrations of traditional PDF tools. Here's what sets us apart:

Completely Free & Unlimited

Unlike other online tools, we don't have limits on free quotas or file size. You can process an unlimited number of files per day, of any size, as long as it doesn't exceed your device's processing capabilities.

100% Private & AI-Proof Security

Unlike cloud-based tools that upload your files to servers (where they risk being scraped by AI crawlers or used for model training), CedarPDF processes everything 100% locally in your browser. Your files never leave your device.

Fast & Easy to Use

No software installation, no registration, and no email address needed. Simply select your file, edit the fields, and download. Our intelligent engine processes your PDF instantly.

Preserves Original Content

Editing metadata does not alter the actual content, layout, or quality of your PDF. It only updates the hidden document properties, ensuring your file remains exactly as it was.

When Do You Need to Edit PDF Metadata?

From students to professionals, CedarPDF helps people from all walks of life manage PDF metadata effortlessly. Here are some common scenarios:

For Students & Researchers

Organize Academic Documents

  • Add proper titles and author names to research papers for better organization.
  • Tag lecture notes and textbooks with keywords for easy searching later.
  • Set subject fields on thesis drafts or dissertations before submission.
  • Best of all: It's completely free for unlimited student use!
For Professionals & Business

Standardize Document Information

  • Add company name, author, and department info to internal reports and proposals.
  • Tag contracts and legal documents with keywords for quick retrieval.
  • Set proper titles on client-facing PDFs for a professional appearance.
  • Best of all: Your confidential business data never leaves your computer.
For the AI & Big Data Era

Protect Confidential Data from AI

  • Prevent AI Training: When handling unpublished financial reports, legal disputes, or sensitive HR documents, using cloud-based PDF tools means your data could be scraped and fed into AI training models.
  • Zero-Knowledge Processing: CedarPDF's 100% client-side execution guarantees that no third-party API or AI agent ever has access to your private information.
  • Defeat AI Scrapers: Your document structure and content remain entirely offline and secure.
  • Best of all: Enterprise-grade privacy protection, completely free and directly in your browser.

Frequently Asked Questions

Everything you need to know about editing PDF metadata with CedarPDF.

Is my data safe from AI scrapers and cloud training models?
Absolutely. In the era of AI, many online tools upload your files to cloud servers, where they risk being scraped, indexed, or used to train machine learning models. CedarPDF is different: we process everything 100% locally in your browser. Your files never leave your device, ensuring complete zero-knowledge privacy.
How do I know you aren't uploading my files?
You can verify this yourself! Open your browser's Developer Tools (F12) and go to the 'Network' tab while using CedarPDF. You will see zero POST requests or file uploads. All processing happens locally in your browser's JavaScript engine.
Is editing PDF metadata free?
CedarPDF is truly free. Unlike other online tools, it doesn't set daily usage limits or restrict PDF file size. It also doesn't require you to provide an email address or register. Furthermore, it doesn't secretly add watermarks to processed PDFs.
Does editing metadata change the content or quality of my PDF?
No. Editing metadata only updates the hidden document properties (like title and author). The actual text, images, layout, and quality of your PDF remain completely untouched.
What is the maximum size of PDF files I can process?
In fact, there is no hard limit to the file size, as long as your device has sufficient processing capacity. For current standard PCs or mobile phones, we recommend that the size of the PDF file to be processed should not exceed 200MB for optimal performance.
What happens if my PDF is encrypted or password-protected?
If your PDF has an "open" password (required to view the file), you won't be able to load it. If it has a "permissions" password, you may still be able to edit the metadata, but some features might be limited. Our tool will notify you with a warning if the PDF is encrypted.
Can I use CedarPDF on devices other than desktop computers?
Of course! CedarPDF is designed to work on all types of devices (PC, Laptop, Mobile, Tablet) and operating systems (Windows, Mac, iOS, Android).